/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package org.apache.streampipes.wrapper.siddhi.query.expression.aggregation;

public enum AggregationFunction {
  SUM("sum"),
  COUNT("count"),
  DISTINCT_COUNT("distinctCount"),
  AVERAGE("avg"),
  MAX("max"),
  MIN("min"),
  MAX_FOREVER("maxForever"),
  MIN_FOREVER("minForever"),
  STANDARD_DEVIATION("stdDev"),
  AND("and"),
  OR("or"),
  UNION_SET("unionSet");

  private String aggregationFunction;

  AggregationFunction(String aggregationFunction) {
    this.aggregationFunction = aggregationFunction;
  }

  public String toAggregationFunction() {
    return this.aggregationFunction;
  }
}
